developer-delphi-architecture-and-design

Define modular architecture boundaries in Delphi by separating code into Main, Modules, Commons, and Views. This structure reduces coupling, enforces clear module contracts, and improves overall codebase evolvability.

Implement dependency injection in Free Pascal using constructor injection and Factory New. This enforces Inversion of Control (IoC), reduces tight coupling between modules, and improves application testability.

Handle schema evolution in Delphi by applying a clear strategy for versioned migrations. Plan up and down migrations to manage database changes across codebases without breaking existing module contracts.

You need interface contracts (I*) for Delphi and FPC applications when defining module boundaries to reduce coupling. Contracts enable DI/IoC patterns by ensuring modules interact through abstractions rather than concrete implementations.

Yes, you can use Fluent and Factory design patterns for object creation in Pascal projects. They work with constructor injection to enforce DI/IoC, providing a clear strategy for object instantiation and schema migration.

Tight coupling between modules makes Delphi codebases hard to maintain because changes ripple across the application. Defining interface contracts and applying DI/IoC via constructor injection isolates changes and improves evolvability.